Bake-oven.



section on line 2-2 of Fig; 1.

.To all 'whom it may concern:

between the tiles and the superstructure,

" UNITED sTATEs PATENT: oEEIcE.

LoUIsfrif. Koma, oF PHILADELPHIA, PENNSYLVANIA.

Be it known that I, LOUIS J. KoLB, a citizen of the lUnited States, and a resident of the city of Philadelphia, State of Pennsyl- Vania, have invented 4certain new and useful Improvements in Bake-Ovens, of which the following is a full, clear, ,and exact disclosure, reference being had to the accompanying drawings, forming a part of this specilication.

The main objects 'of this invention are to provide improvements in the construction of bake ovens which maybe applied to any bake oven of the usual form, and whereby the heat of theoven will' be economizedand made more uniform; and to-provide other improvements as will appear hereinafter.

In the accompanying drawings; Figure l, is a longitudinal vertical section-of a ba e oven constructed in accordance with this invention; and Fig. 2 a vertical transverse Referring to the drawings, the oven illustrated'comprises the usual-walls 1- of brick or other suitable material and provided with the usual baking 'chamber 2 having a false bottom 3 and the usual sole 4 beneath which is thefire place 5, grate bars 6 and ash pit 7 Leading from the lire place 5 is the usual chimney flue 8 as shown in dottedlin'es in Fig. 1. Above the roofof the baking chamber are the usual air spaces 9.

Between the walls 1 of the oven and the foundation or support 10 thereof, 'I have provided two' layers of heat insulating material, the upper layer being composed' of a plurality of hollow rectangular tiles 11 ormin a series of airspaces 12,`the outer `ends o which may be closed b'yclosures 13 in the hollow ends of the tiles. The lower layer of insulating material 14 which is between the layer of tiles and the foundation 10 of the oven is composed preferably of asbestos or other similar non-conducting material.- lTwo similar layers of insulation are arranged between the walls l of the oven and the superstructure 15 of brick work or other material, these latter layers being arran ed with the tiles 16 adjacent the walls 1 o the oven, and the layer 17 of asbestos or other similar material above the tiles and l By this construction and arrangement, the

Alayers of tiles respectively below and above the oven provide a 'nearly perfect insulation,

BAKE-OVEN.

Specicationof Letters Patent.

and the insulation-of any heat-that passes the tiles is made practically perfect by the layers o f asbestos which fare arranged out-. side of the layers of the tiles.

From the above it will be seen that I have substantially provided a series of tubes arranged side by side and vextending theV length and breadth of the oven, said tubes being arranged between the oven and its foundation and the oven and its superstructure. By sealing the ends of the tubes so formed the air inclosed therein and forming a non-conductor of heat -cannot b'e changed. If the ends of the tubes were open as the air within the tube became heated, it would be discharged out of the ends of the tubes and drafts formed therethrough, and while .this would prevent the superstructure, or the foundation from becoming heated, the heat absorbed by the. air and carried away by it would be lost.4 I prefer, therefore, to seal the ends of the tubes, and, consequently, prevent this waste of heat which would be otherwise used in continually heating up the cool air entering the tubes.

This invention may be applied with ad- 'vantage to any ordinary form of oven and .will result in preventing theloss of heat from the .walls of the oven by conduction through the foundation or superstructure of theV oven,'th`us economizing the heat and keeping the heat more uniform in temperature, with a consequent saving in 'fuel and I provement in the results attained in bak# 1n f I(Iglthough I have shown only oneform in which this invention may be constructed,

'and applied, I wish it to be-clearly understood that I do not limit myself to the exact 'construction herein set forth, as many changes might be made in the details of the construction within the scope of the appendedclaims.

Havin thus described ,my invention, I

claim an vdesne to protect by `Letters Patent 1 of the United States:

,1. The combination with an oven, of a layer of hollow tiles below said 'oven for supporting and for insulatin 'the same.

2'. The combinat1on wit an oven of a supi 105 l port therefor comprising a layer of asbestos,

3. The combination with an oven, of layers Patented Aug.y 23, 1910. Application medotober 21, 190s. ,seria1Na45a7sa and a layer of hollow tiles superimposed `upon said layer of asbestos.

the oven to form a non-Conductor of heat, and means arranged to prevent circulation through said tubes.

4. The Combination with an oven and its supporting structure, of means for insulating said oven from its support comprising a layer of closed hollow 4tiles arranged to form a. series of tubes.

The combination with an oven and its supporting structure, of means for insulat-v ing said oven from its support comprising a layer of hollow tiles arranged to form a series ofA tubes and means for closing the ends of said tubes.

6. Thev combination with an oven, 'of a 15 series of non-conducting tubes Closed at their ends, arranged .above and below said oven to form a non-conductor of heat. y

In Witness whereof, I have hereunto set my hand this 8th day of Oct-ober, A.. D. 1908. 20

LOUIS J. KLB. VVtnesses:

HARRY COBB KENNEDY, l ALEXANDER PARK. 

